/***
	Copyright (c) 2008-2011 CommonsWare, LLC
	Licensed under the Apache License, Version 2.0 (the "License"); you may not
	use this file except in compliance with the License. You may obtain	a copy
	of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
	by applicable law or agreed to in writing, software distributed under the
	License is distributed on an "AS IS" BASIS,	WITHOUT	WARRANTIES OR CONDITIONS
	OF ANY KIND, either express or implied. See the License for the specific
	language governing permissions and limitations under the License.
	
	From _The Busy Coder's Guide to Advanced Android Development_
		http://commonsware.com/AdvAndroid
*/

package com.commonsware.android.syssvc.alarm;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.os.PowerManager;
import android.util.Log;

abstract public class WakefulIntentService extends IntentService {
	abstract void doWakefulWork(Intent intent);
	
	public static final String LOCK_NAME_STATIC="com.commonsware.android.syssvc.AppService.Static";
	private static PowerManager.WakeLock lockStatic=null;
	
	public static void acquireStaticLock(Context context) {
		getLock(context).acquire();
	}
	
	synchronized private static PowerManager.WakeLock getLock(Context context) {
		if (lockStatic==null) {
			PowerManager mgr=(PowerManager)context.getSystemService(Context.POWER_SERVICE);
			
			lockStatic=mgr.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
														LOCK_NAME_STATIC);
			lockStatic.setReferenceCounted(true);
		}
		
		return(lockStatic);
	}
	
	public WakefulIntentService(String name) {
		super(name);
	}
	
	@Override
	final protected void onHandleIntent(Intent intent) {
		try {
			doWakefulWork(intent);
		}
		finally {
			getLock(this).release();
		}
	}
}
